FORMATION

n. Fo2rm-a's hu3n. Gr., jrAdo-is, Mop <m. Lat., formatio (from form are, to form). Fr.,/. Ger., F., Gestaltung, Bildung. 1. The proce by which anything is formed. 2. The thing formed. Ammonshornr (Ger.). 1. See F. of the cornu ammon is. 2. See HIPPOCAMPUS major. Cell f. Fr.,/. cellulaire. Ger., Zellenf. 1. See CELL-grenest's. 2. A ti ue or ma composed of cells. ['l Arch. f. path. Anat. u. Phys. u. f. klin. Med.," 185 (J).] Claustral f., Claustrum f. Ger., Vormauerf, Spindelzellenf. Of Meynert, the fifth layer of the cerebral cortex, from its containing so many fusiform cells similar to those in the claustrum. [J, 35.] F. endogene (Fr.). See Endogenous REPRODUCTION. F. of the cornu Ammonis. Ger., Ammonshornf. 1. Of Meynert, the cerebral cortex of the cornu Ammonis, in which the nerve-cells are almost exclusively of the large pyramidal form. 2. The third stratum of the five-strata type of the cerebral cortex, as it is likewise characterized by the large pyramidal nerve-cells. [J, 30, 35.] Granular f. See Granule-like /.Granule f. See Granule MASSES. Granule-like f. Ger., komerartige F. Of Meynert, the thin layer of small, irregular, closely packed ganglion-cells forming the fourth stratum in the five-strata type of the cerebral cortex. [J, 32, 35.] New f. See NEOPLASM. Reticular f. Lat., formatio reticular is. Fr., /. reticulee. Ger., Reticuldrf. The dorsal portion of the medulla oblong at a, below the nuclei of the tenth and twelfth cranial nerves, so called from its microscopic appearance, due to the interlacing of numerous transverse and longitudinal white nerve-fibres, among which are scattered nerve cells. [I, 1 (K).] Spindle-cell f., Spindelzellenf (Ger.), Vormauerr (Ger.). See Claustral f. [s. 97]